clinical report of 27 cases of seconda ry choledocholith after cholecystectomy of elder patients treated with combination of tcm with western medicine 中西医结合治疗老年患者胆囊切除术后继发胆总管结石27例临床报导
the author points out that three basic factorsal are essential to the formation of teb : the traffic trunk line, group of towns, and the industrial sys tem based on the seconda ry industry and the tertiary industry 通过典型经济带的实证分析发现了“工业自生长点沿着交通轴集聚、扩散及再集聚的动态过程”,将其命名为工业波。